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"""The logic for Flake8's integration with setuptools."""
import os
import setuptools
from flake8.main import application as app
class Flake8(setuptools.Command):
"""Run Flake8 via setuptools/distutils for registered modules."""
description = 'Run Flake8 on modules registered in setup.py'
# NOTE(sigmavirus24): If we populated this with a list of tuples, users
# could do something like ``python setup.py flake8 --ignore=E123,E234``
# but we would have to redefine it and we can't define it dynamically.
# Since I refuse to copy-and-paste the options here or maintain two lists
# of options, and since this will break when users use plugins that
# provide command-line options, we are leaving this empty. If users want
# to configure this command, they can do so through config files.
user_options = []
def initialize_options(self):
"""Override this method to initialize our application."""
pass
def finalize_options(self):
"""Override this to parse the parameters."""
pass
def package_files(self):
"""Collect the files/dirs included in the registered modules."""
seen_package_directories = ()
directories = self.distribution.package_dir or {}
empty_directory_exists = '' in directories
packages = self.distribution.packages or []
for package in packages:
package_directory = package
if package in directories:
package_directory = directories[package]
elif empty_directory_exists:
package_directory = os.path.join(directories[''],
package_directory)
# NOTE(sigmavirus24): Do not collect submodules, e.g.,
# if we have:
# - flake8/
# - flake8/plugins/
# Flake8 only needs ``flake8/`` to be provided. It will
# recurse on its own.
if package_directory.startswith(seen_package_directories):
continue
seen_package_directories += (package_directory,)
yield package_directory
def module_files(self):
"""Collect the files listed as py_modules."""
modules = self.distribution.py_modules or []
filename_from = '{0}.py'.format
for module in modules:
yield filename_from(module)
def distribution_files(self):
"""Collect package and module files."""
for package in self.package_files():
yield package
for module in self.module_files():
yield module
yield 'setup.py'
def run(self):
"""Run the Flake8 application."""
flake8 = app.Application()
flake8.run(list(self.distribution_files()))
flake8.exit()
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